Hastings 3.386"/86.00 mm Bore +.50 mm Over Size, 4-Cylinder Ring Set with 1.20 mm Top Ring, 1.50 mm Second Ring and a First Oil Ring is 2.50 mm.
This Hastings 4-Cylinder Ring Set has a top ring manufactured from stainless steel with nitrided ring surface treatment, a second ring manufactured from ductile iron with phosphate ring surface treatment. The 1st oil control ring is manufactured of nitride rail/stainless expansion with a nitirded ring surface treatment.

Application Summary:

Year Make/Model
2007-2008 Cadillac BLS
2001-2003 Chevrolet Astra
1998-2005 Chevrolet LUV
2002-2006 Chevrolet Zafira
Attributes
1st Oil Groove 2.50
1st Oil Ring Material NITRIDE RAIL/STAINLESS EXP
2nd Groove 1.50
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 2N4189.50
California Proposition 65 No
Engborein 3.386
Engboremetric 86.00
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 1.20
GTIN 00075538397106